MAX7317AEE+T

Overview

The MAX7317AEE+T is a 10-port SPI-interfaced I/O expander manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.25V to 3.6V and supports a maximum clock frequency of 26MHz. The device features 10 individually configurable I/O ports (P0–P9) that function as open-drain outputs or overvoltage-protected Schmitt inputs, rated up to 7V. Standby current is typically 0.7μA at +25°C and maximizes at 1.9μA across the full temperature range. It is housed in a 16-pin QSOP package and functions reliably from -40°C to +125°C.

Feature Summary

• Supports hot insertion with high-impedance state during power-down
• I/O ports withstand 7V independent of the device supply voltage
• Includes RAM register for general-purpose data storage

Applications

• Portable Equipment
• Cellular Phones
• White Goods
• Industrial Controllers
• System Monitoring

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance. Confirm the manufacturer designation matches Analog Devices Inc. or Maxim Integrated. Ensure the component meets the required operating temperature range and electrical specifications for your application before procurement.

Selection Notes

Select this component when expanding microprocessor I/O via an SPI interface is required. It is suitable for applications needing overvoltage protection on input pins and support for hot-swap operations. Consider the 16-pin QSOP package constraints and verify that the 2.25V to 3.6V supply range aligns with the system design.

Part Context

The MAX7317 series provides serial-interfaced peripheral functionality for microprocessors. The AEE suffix specifically denotes the 16-pin QSOP package variant. This part expands digital I/O capabilities while maintaining compatibility with standard SPI architectures.

Replacement Considerations

Refer to the MAX6966/MAX6967 datasheet for similar parts featuring constant-current outputs and 8-bit PWM controls.